MyTana MV84 User manual

051722
Manufacturers of Quality
Sewer & Drain Cleaning
Equipment since 1957
[phone]
Factory Direct Customer Service
M –F 7am – 5pm CST
Competent • Polite • Clear
www.MyTana.com
746 Selby Ave • St. Paul, MN 55104
fax: [phone]
MV84 Jetter User Manual

PG 2
 IMPORTANT 
FOR YOUR SAFETY, AND TO ENABLE
MAXIMUM EFFECTIVENESS OF
YOUR EQUIPMENT, READ AND
UNDERSTAND THIS INSTRUCTION
MANUAL ENTIRELY BEFORE USING
YOUR HIGHPRESSURE WATER
JETTING UNIT
FAILURE TO FOLLOW INSTRUCTIONS
AND REGULATIONS CONTAINED IN
THIS MANUAL CAN RESULT IN
SERIOUS INJURY TO THE OPERATOR
AND/OR TO ANYONE IN CLOSE
PROXIMITY TO THE WORK AREA.
The Jetting Process
Sewer jetting (or hydro-jetting) uses a combination of water
pressure (psi) and ow (gpm) through a hose and nozzle to
ush debris out of drains or sewer lines.
Water jetting is used to penetrate and wash out clogs or ice,
potential blockages or to simply clean the walls of drains and
sewer lines to prevent future blockages.
Sewer jetting diers from normal pressure washing:
• Sewer jet nozzles direct the ow of water back toward the
operator at a 20 to 45 degree angle. This backward stream
propels the sewer nozzle and hose forward into the sewer
line and also cleans the walls of the pipe.
• Jetting pumps deliver more ow and controlled pressure to
clear tough blockages.
Components of hydro jetters: Water pump, motor, hose
reel; various sub-components that protect the pump and the
operator; various nozzles for various cleaning applications and
situations. Larger jetters use a water storage tank for water
supply buer.
MyTana stocks replacement parts for our
jetters. Many are available to purchase online
at mytana.com/jetter-parts
Safety First!
Instructions and Precautions
Pumps
• Remove“shipping” plug on top side of pumps and
replace with vented plug. This is very important for
the proper operation of the pumps.
• Do not store or run the pumps on its side or at a
sharp angle, since oil can run out of the vent plug.
Environment
• Use caution in conned, wet areas. Drain cleaning
professionals often work directly through non-trapped
openings into sewers — make sure that there is adequate
ventilation into the work area.
• Neutralize or remove corrosive drain cleaners from drain
before starting.
• Do not operate machine in areas where combustible gases,
liquids or dust are present. Fire or explosion may occur.
Keep bystanders or unauthorized persons away
Insist they keep a safe distance before operating
high pressure equipment.
• Never hold on to nozzle or point it at anyone with machine
turned on. High pressure water streams can cause serious
bodily harm.
Always insert hose at least 3-4 feet into pipe opening and
hold onto hose before turning the machine on.
Shut the machine down:
• When changing nozzles, hose or reels.
• Before disconnecting water supply. Running a water pump
“dry” will seriously damage the water pump.
• If it will be unattended.
• If machine fails to run properly.
Common Sense
• Don’t operate equipment while smoking, under the
inuence of drugs, alcohol or if taking medication that alters
alertness.
• Wear goggles or a face shield to product your eyes, protec-
tive gloves, rubber sole boots, and other
protective clothing as required.
• Keep all labels, decals, warnings, cautions, and instructions
with machine. For new decals or labels contact Mytana.
• NEVER run ammable liquids or toxic chemicals (such as
insecticide or weed killer), acids or hard caustics (such as lye)
through the pump. Only water!
Vented
Plug
uRead Shut Down
instructions on pg 7.
MyTana MV84 DUAL CART JETTER User Manual

PG 3
• NEVER use chemicals or agents that are not compatible
with the Buna-N and PVC (polyvinyl chloride) or neoprene
covering of the hose.
• NEVER clean the machine using its own spray.
The machine is water-protected, but not water proof.
High-pressure spray could damage machine components.
Gas Jetters
• Operate machine in well ventilated environment. Exhaust
fumes can be potentially lethal to the operator.
• Do not allow ame or sparks in the area of operation.
• Do not refuel engine when it is running or hot.
Spilled gasoline or gas vapor can ignite if it comes
in contact with hot engine.
• Be careful not to touch engine block or the manifold/muer
during operation. These areas will become very hot during
normal operation.
• Do not operate the machine with the air cleaner cover
removed, this can cause a re.
• Do not lay jetter unit on its side or tilt it backwards more
than 30° when transporting. This can cause gas to leak out
the cap vent.
uDO NOT ll the gas tank all the way. Leave several
inches of space between the gas and the top of the tank
to prevent gas from leaking out when transporting.
Use of diesel fuel in the gas tank may damage the engine.
In case of fuel spill use a cloth to clean up the spilled fuel
and move the machine to another area until all vapors
have cleared.
Gas jetters that are ordered with an electric starter package
will have a battery attached. Batteries contain sulfuric acid.
Avoid direct skin contact.
• Wear protective gloves, clothing and eye wear when
handling your battery.
Maintenance
• Keep machine clean and dry to maximize performance and
longevity.
• Follow maintenance schedules such as changing oil, check
for weak spots, slices or cuts in hose, keep inlet screen clean,
replace nozzles when worn, see page 7.
• Keep antifreeze in hose and pump in freezing
temperatures.
Additional maintenance details follow in this manual.
MV84 Components
Hoses and Nozzles
Your jetter works via the proper blend of water pressure and
water volume: the more water that has to pass through the
restriction of a hose, the less pressure you will have at the
nozzle end.
To optimize cleaning power, use the shortest hose with the
largest inside diameter that you can. Pressure is lost as the
water travels down the length of the hose. As the length
increases, the pressure decreases. In addition, the smaller the
diameter of the hose, the greater of loss of pressure per foot
will be. The MV84 jetter is optimized for 250’of 3/8”hose.
The orices (holes) in the nozzle aect pressure. Over time,
water pressure will wear the orices in your nozzle resulting
in pressure drop and reduced cleaning eectiveness. Nozzles
need to be replaced as normal wear occurs.
When using new hose, run water through it to clean it out
before attaching the nozzle.
Pumps
Do NOT run pump without water in it. This can damage the
cylinder walls, warp or crack the pump casing.
Do not use water more than 140° F. This will damage seals.
Your pump is equipped with a thermal relief valve, however, to
optimize pump protection avoid water (or any pumped uid)
that is too hot on the inlet side.
NEVER run pump if there is ice in pump or outlet hose.
See Care Tips section on page 7 for antifreeze procedure.
uIf the jetting unit will be unused for a period of time
(more than several days), even in warm temperatures,
we recommend running antifreeze through pump
and hose before storage. This helps with lubrication,
prevents o-rings from drying out and greatly reduces
the chance of rust, minerals and other contaminants
damaging the pump during storage.
Periodically change oil in pumps.
See page 7 for additional information.
continued on next page
MyTana MV84 DUAL CART JETTER User Manual

PG 4
Pressure Regulating Unloader
The pressure regulating unloader valve both regulates the
pressure and relieves pressure on the pump while in bypass.
Regulating pressure:
Using the unloader knob
(located above the pump)
Set the engine throttle to
a constant motor speed
before adjusting pressure.
Lower rpm equals lower
pressure at the pump, while
high rpm delivers higher
pressure. Turn the knob
to the right to increase
pressure, left to decrease.
The Unloader prevents pressure overload in the event that
the nozzle is plugged or the ball valve is shut o. When in the
by-pass mode, the pump will continue to run.
uAvoid running in by-pass mode for more than
2 minutes if the by-pass is not returning to the
oat tank. It can damage the pump.
Clear lter
housing
3/8 x 3/8
Street elbow
Pulse valve
control
Drain
3/4 x1/2
hex bushing
3/4
T-adaptor
Pressure
gauge
Vented
oil plug
3/4 x 1 male
tube tting
3/4 x 1/4
Street elbow
Pressure
gauge
Using the remote
Set the engine speed to
high automatically increases
the pressure to 4,000 psi.
Conversely, switching the
engine speed to low drops the
pressure to less than 1,000 psi.
Pressure Gauge
The gauge reects pressure from the pump head only, not
pressure at the end of the hose. It is important to select the
largest possible hose size in order to have as much pressure as
possible at the end of the hose.
Pulse Valve
The stem and handle extending from one cylinder of the
water pump enables pulsation of the water stream through
the hose and nozzle.
Turning the pulse control handle clockwise (right), closes one
valve of the pump. This creates pulsation or vibration in the
hose, allowing the hose to “wiggle” through multiple or tight
bends easily. Turn the control left to stop pulsation.
NOTE: Pulsing creates extreme vibration and faster wear on the
pump. Use pulsation only as needed, do not use if a blockage
or sewer line conguration does not require it.
Unloader (pressure regulator)
Pulse-abler
control
Drain for
tank and
pump
MV84 Pump Diagram
MyTana MV84 DUAL CART JETTER User Manual

PG 5
Water Inlet and Filter
Use heavy duty 3/4” hose no more than 50 ft. long. If
the unit is run with an inadequate water supply, pump
damage will occur. Before attaching source hose to the
jetter, run water through the source hose to ush debris
out of the faucet and hose. Make sure the water is running
clean and clear.
The water inlet has a lter to prevent small debris from
running through your pump. However recheck the inlet
lter before each use to make sure there is no obstruc-
tion. Unscrew and rinse out screen if necessary.
Remote Control
The MV84 motor can be
controlled with a handheld
remote. Toggle switches on the
side of the jetter frame must be
set correctly for the handheld
device to work, instructions are on next page.
Garden hose
hook-up
Throttle
Choke
Electric Start
Jumper
hose
Jumper hose
hook-up
Ball valves
Pre Operation Checklist
• Be sure you understand all safety
precautions (pg 2) and have been
trained to use the machine
• Locate jetter on level surface where
water won’t pool, engage brake
• Check uid levels— oil in pumps, oil
and gas in motor
• Check for adequate water ow (right)
• Check hose for wear or kinks, that
all hoses and lines are clear and inlet
lter is clean
• Select and inspect nozzle for wear
• Check that hose reel and all
connections are tight
• Wear protective clothing: gloves,
rubber boots and goggles or face
shield to protect your eyes from spray
Check water supply
for 8 gpm rate
The water tank has
gallon measurements on
the side.
• With the supply hose
wide open, place it in
the tank.
At the same time, start
a stop watch.
• After 1 minute, remove
the water supply hose
and read the total
gallons, there should
be at least 8 gallons in
the tank.
MyTana MV84 DUAL CART JETTER User Manual

PG 6
Operation Instructions
1. Attach garden hose to water faucet. Check source supply
hose is at least 8 gal/minute (see previous page)
– Run water to clear air and ush debris out of faucet
and hose before connecting to pump.
– Shut water o again when water runs clear.
2. Attach other end (male end) of garden hose to water inlet
valve at pump.
3. Connect jetter hose to reel.
4. Attach nozzle to end of hose. Finger tighten, don’t over
tighten.
5. Mark the hose approximately 15 ft back from nozzle with
electrical tape. Use this tape as your signal to shut o
machine before retrieving all the hose out of the drain
when you are nished.
6. Open ball valve.
7. Open water faucet again
to prime pump. An equal
amount of water should pass
through the orices of the
nozzle.
8. Push jetter hose into drain up
to the marker if possible, or
minimally 3 to 4 feet.
Remote Jetting Set Up
• Do steps 1-5
• Position the pressure hose
and reel at the drain site.
• Connect the 50’ jumper
hose between jetter and
the inlet on the hose reel.
• Open the ball valve
on the reel.
• Continue from step #6
Do not shut o
water ow with
ball valve until the
pressure is reduced
to zero. If the ball
valve on the reel is
shut o then stored
or transported
under pressure,
it can create a
pressure lock and
will be hard to turn
the valve on for
the next job.
Using the Remote
DIR 1 – Set remote panel toggle switches as shown
Start Up Make sure fuel line is open.
• Press the ON button, power light will glow
• Press the CRANK button, motor will start
Throttle
• Press the SPEED (Hi/Low) button to throttle the engine up or down.
– there may be a 2-4 second delay for the motor to respond
– the pressure will increase to 4,000 psi when the motor is throttled
up, and will drop when the motor is throttled down
– pressure may also be adjusted with regulator knob
during operation
Shutting Down
• Throttle down the motor, press the SPEED button if
needed wait for pressure to drop to less than 1,000 psi
• Press OFF to stop motor
• Move remote panel toggle
to OFF to save battery
• Turn the fuel valve to the“closed” position
Startup with Key
DIR 2 – Set remote panel toggle switches as shown
Start Up Make sure fuel line is open.
• Set the throttle about halfway
between “MIN” and “MAX”
• Turn key to “start” to start engine
• Move throttle to desired speed
• Adjust pressure with pressure regulator knob
– turn right to increase pressure, left to decrease
– for normal operation, do not exceed 4,000 psi
with the 3/8” hose.
Shutting Down
Reduce pressure gradually with regulator knob
until gauge is less than 1,000 psi
• Move throttle lever to MIN setting (slowest)
• Turn the key to the “o” position
• Turn the fuel valve to the“closed” position
9. Turn the fuel valve to the“open”position.
10. Start Motor/Engine
– use the remote control or key start.
See both procedures below.
– Be sure pressure is less than 1,000 psi before starting up.
The hose will start to advance down the drain line. Pull from the
reel and guide it into the line. After it advances a few feet, pull it
back 1/2 way. The actual cleaning of the line takes place when
the hose is pulled back. Repeat the forward/back process.
When nishing up, watch for tape marker
on hose as you pull the hose out. And shut
down machine, see procedures below.
After shutting down the motor
1. Close water faucet and disconnect
garden hose from spigot.
2. Close ball valve. Disconnect garden
hose from jetter.
3. Pull remaining hose from drain line.
4. Remove nozzle if you choose.
5. Store jetter hose properly on reel or in
a coil to avoid damage to hose.
MyTana MV84 DUAL CART JETTER User Manual

PG 7
Operating Tips
• Tight bends and certain blockages are often more easily
negotiated by rotating or twisting the jetter hose at drain
opening. Once you are through that area, pull back and pass
through several times to ensure cleaning.
• Once you have opened any blockage(s), pull hose back very
slowly to provide maximum cleaning to wall of pipe.
• Use pulsation only if needed to advance nozzle and hose.
• When operating from the high end to low end (most
common) shut o the water ow ball valve on the reel
occasionally. This will allow debris to get ahead of the nozzle
and ush it down the pipe.
• Warm water is eective in cleaning grease and ice blockages.
A cold-hot mix from the tap is adequate, but do not exceed
140° Fahrenheit. Hotter water can damage seals in your
pump. If you need hot water, use our HotBox water heater.
Anti Freeze Procedure
If you know there will be a period of 2-3 days when the
jetter will be idle OR if the jetter is stored in potentially freezing
weather, make sure to run antifreeze into pump and hose as
part of your shut down procedure.
Insert a short length of garden hose into a gallon of antifreeze.
Turn on the pump and run until you see antifreeze coming out
of the nozzle end of the hose.
At next use of jetter, you can recover most of that antifreeze
when you hook up to your water source. Antifreeze can be
used multiple times. However if it gets too diluted (more than
50% water) or if there is any discoloration, discard and replace
with new. We recommend using RV antifreeze.
Care and Maintenance
Regular inspection and maintenance are key to preventing
breakdowns and prolonging the life of the equipment.
Keep machine clean and dry to maximize performance and
longevity. Keep antifreeze in hose and pump in freezing temps
or if idle for more than 2-3 days, see procedure at left.
Never let pump run dry! Pump cavitation can occur in only
a few seconds of low water supply. Ensure adequate source
supply before operating.
Avoid running anything abrasive through pump
which will damage pump components, resulting in total
malfunction or, minimally, loss of pressure capability.
Do not use pulse valve more than necessary.
Never run pump if there is ice in pump or outlet hose.
Keep jetter hose away from sharp edges and muer
• The hot muer can damage the coating on the hose making
it prone to bursting.
• Sharp edges can scrape, slice and generally damage hose
quickly. While hose is easily replaced, it pays to take care by
buering sharp edges with rags, tape, cardboard, etc. Or use
a TigerTail™ guide, available at MyTana.com.
Maintenance Schedule
Follow this maintenance schedule to maximize the life of your
jetting equipment. SHUT OFF ENGINE BEFORE ATTEMPTING
ANY REPAIRS OR MAINTENANCE.
Inspect and check for: Frequency
Leaks in discharge or inlet tting and hose Daily
Adequate water supply to the pump Daily
Jet nozzles are not clogged or worn Daily
Pump oil level, fuel level engine oil level Daily
PRESSURE HOSE for wear and damage. Daily
INLET FILTER and FUEL FILTER for dirt and
sediment.
Daily
AIR CLEANER for dirt Weekly
Belt tension Monthly
Service item: Frequency
Pump Crankcase Oil
Change
1st mo. or 25 hours
for “break in”
Then every year or 500 hours
If water gets into crankcase,
change immediately
Engine Oil Change* 1st mo. or 20 hrs.
Then every 6 mo. or 100 hrs.
Air Filter Cleaning * Every 3 mo. or 50 hrs.
Fuel Filter Change * Every 6 mo. or 100 hrs.
Spark Plug Change * Every 6 mo. or 100 hrs.
* Refer to engine manufacturer’s manual for more details.
Recommended oil:
Engine Use SAE 10W30 Motor Oil to full mark on dipstick or
to dot on sight glass
Pumps
• Primary – General Pump (GP) Brand
• Secondary – SAE 30W, non-detergent
MyTana MV84 DUAL CART JETTER User Manual

PG 8
Troubleshooting
!!Warning!! Before attempting any repairs or maintenance, make sure machine is shut o. For electric start units, disconnect
battery cables. Severe injury can occur due to electrical shock.
Problem CAUSE REPAIR
Pump Malfunction And Pressure Delivery Problems
Low Pressure
Worn or oversized nozzle Replace worn nozzle
Check nozzle size
Clogged water and/or chemical inlet strainer Clean or replace strainers
Worn or damaged plunger seals Replace plunger seals
Worn or damaged inlet or discharge valve Replace worn valve poppets or valve springs
Dirt or foreign particles in valve assembly Remove any dirt or particles
Air leak in inlet plumbing or discharge Locate air leak. Reseal connection or replace
damaged port
Rough operation with
loss of pressure
Restricted inlet plumbing, or air leak in inlet
plumbing
Repair clogged inlet ttings. Check supply hose
and ensure adequate water supply
Damaged plunger seal or pump valve Replace any damaged pump parts and clean
out any foreign particles
Clogged nozzles Clean or replace nozzles
Water leakage at intake
manifold or crankcase
Worn manifold seals, plungers, O-rings or
condensation inside crankcase
Replace seals, sleeves, or O-rings. Change oil at
regular interval
Inadequate water supply to pump creating a
vacuum lock
Ensure adequate tap water supply; clear inlet
lter
Oil leaks Worn pistons and/or leaking crank seals,
crankcase cover seal or drain plug seal
Replace seals, sleeves or O-rings
Excessive wear Worn and loose bearings Replace bearings. Check bearing seals, spacers,
and retainers. Replace any worn parts.
Short plunger seal
Abrasive particles in uid being pumped Replace water and chemical strainers if
damaged or missing. Install additional lter
if ne abrasives are still evident
Operator(s) running pump without water
supply
DO NOT ALLOW UNIT TO RUN WITHOUT
ADEQUATE WATER SUPPLY
Hot water in pump Do not run in bypass for more than 2 min.
Do not let water supply exceed 140° F
Irregular Spray pattern Worn or partially clogged nozzle Clean or replace nozzle
Unloader Valve Malfunction
Unloader cycles
Fitting leaking downstream Tighten/replace tting
Clogged nozzle Clean or replace
Fluid leaking from body O-ring worn or cut Replace part as necessary
Unloader will not turn up
to pressure
Foreign particle in valve Replace or clean
Nozzle worn or sized incorrectly Replace part as necessary
Plunger or valve worn Replace part as necessary
Extreme pressure spikes
Adjusting nut turned completely into unloader Loosen adjusting nut
Clogged nozzle Clean or replace
MyTana MV84 DUAL CART JETTER User Manual